User's Manual

BLUE TOOTH 4.0
16
CW8761 BT4.0 蓝牙模组 :
PIN NAME TYPE DESCRIPTION
1 GROUND DIGITAL CROUND
2 GROUND DIGITAL CROUND
3 PCM CLK I/O N.C. (NO CONNECTION)
4 PCM SYNC I/O N.C. (NO CONNECTION)
5 MIC-IN MICROPHONE INPUT
6 BT_LDO_EN ACTIVATE AT LOW LEVEL
7 BT 3V3 DC POWER 3v3 IN
8 BT 3V3 DC POWER 3v3 IN
9 PCM MOSI I/O N.C. (NO CONNECTION)
10 PCM MISO I/O N.C. (NO CONNECTION)
11 B/D+
USB D+ (FIRMWARE
UPDATE)
12 B/D-
USB D- (FIRMWARE
UPDATE)
13 B UART RTS I/O N.C. (NO CONNECTION)
14 B UART RX
DATA
PORT
BT MODULE DATA INPUT
15 B UART TX
DATA
PORT
BT MODULE DATA OUTPUT
16 32K_CLK I/O N.C. (NO CONNECTION)
17 GROUND AUDIO CROUND
18 GROUND AUDIO CROUND
19 BT-R AUDIO R OUTPUT
20 BT-L AUDIO L OUTPUT